transistor - the main component in all modern electronics, has diminished in size since being invented in 1947.
semiconductor - a cross between a good conductor (such as copper) and a good insulator (such as rubber). It can be made to accept or reject the flow of electrons in a circuit.
How small can transistors get?
The amazing shrinking transistor! Watch it contract a million times until it becomes a tiny dot visible only under a powerful microscope!
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